Losing steps/position, again

**JAZZCNC** · 08-04-2020

Originally Posted by ngwagwa

JAZZ - yes the 5v to the BOB is fed from the vertcal 42 pin connector on the Baldor card. I think I would prefer to by a 5v transformer which should then make the Baldor redundant, just have to work out how to do the E-Stop.

I have found the BOB axis controls, they also feed into the 42 pin connector and am looking for the feeds from the board to the steppers (4 found and 2 to go)

That should be easy enough just follow wires to steppers. If there was a better picture of the original board i could probably tell you. There will be 4 wires per stepper. So look for blocks of 4wires that will probably be same colour wires.

The E-stop is easy enough and you have relays and contactors in there but first, you will need to find their voltages and what other things you need to control. I see what looks like a spindle Speed controller board so this will need to be incorporated into your wiring and safety etc.

To be honest, if you are going to start again with a new controller and drives then I suggest you trace wires and label them, then rip out everything else in the control box and start afresh. It's often quicker more reliable and less confusing.

If you inventory what you have and find the voltages etc and tell me what controller you are going to use I will happily help you work out a wiring schematic.

**ngwagwa** · 08-04-2020

Originally Posted by JAZZCNC

To be honest, if you are going to start again with a new controller and drives then I suggest you trace wires and label them, then rip out everything else in the control box and start afresh. It's often quicker more reliable and less confusing.

If you inventory what you have and find the voltages etc and tell me what controller you are going to use I will happily help you work out a wiring schematic.

Ripping everything out sounds good to me but in the meantime while I get al the bits together I have taken up Doddys offer of a 36V power supply which I want to put on the Z axis to run the machine. I have foud four wires in the controller for the X Axis stepper but the stepper has 6 wires and they arent shown on the Denford wiring diagram for the umbilical connector from controller box to machine.

Here are pics of the 2 relays on the rail:

https://lozharroplures.co.uk/my_images/14.jpg
https://lozharroplures.co.uk/my_images/15.jpg

Much appreciate the offer of a wiring diagram.
I have been speaking to an old friend who is electrical savvy I can use two of the toroidal transformers that I linked to earlier in parallel to get 600Va.
I intend to use an AXBB-E motion controller and UCCNC and the drivers linked to earlier (unless you know any better options)
I have these transformers:
24V 3A
24V 14.6A
12V 2A
And there is an RFI Filter already fitted to the mains input

E-Stop will suffice on the big red button only.

Anything else you need let me know

**ngwagwa** · 11-04-2020

Originally Posted by JAZZCNC

If you inventory what you have and find the voltages etc and tell me what controller you are going to use I will happily help you work out a wiring schematic.

Here is the list:

Existing items

Power supplies:
24V 3A
24V 14.6A
12V 2A
RFI Filter
Omron relay MK2P-S
Omron relay G2R-2-SN
Control Transformer" with outputs marked 28, 110, 120 and 240
DIN Rail
Fan (voltage unknown will check tomorrow)
Main on/Off switch

On order:

Airlink 500VA 230v to 2x45v toroidal transformer

Power supply 50W 5V DC 10A
bridge rectifier 400V 35A
4OFF Electrolytic Capacitor, 4700 µF, 100 VDC

ABXX-E Motion Controller

3-OFF Stepper Motor Driver 6.0A, 80V CNC Microstepping CW8060

Terminal Blocks and wires

I am pretty sure I can wire the ABXX to the drivers and steppers and the VFD is seperate so really all I need help with is getting the mains to the PSUs and on to the devices and the E-Stop.
I think I can work out the limit switches.
I thought it would be tidy to use the existing connectors on the rail to get my rectified output from the toroidal transformer the the drivers, I could have the wiring run behind my mounting board.

Obviously if I have missed anythng please let me know.

**JAZZCNC** · 11-04-2020

Do you have momentary Button on the machine that can be used for safety Reset. You really need this as part of the E-stop safety system.

**ngwagwa** · 11-04-2020

Originally Posted by JAZZCNC

Do you have momentary Button on the machine that can be used for safety Reset. You really need this as part of the E-stop safety system.

I asume you mean the big red one on the front? If so then yes.

EDIT.
No that will be the E-Stop button won't it?

At the moment if I bend over and catch the E-stop with my backside I click on the Mach3 reset button to continue.

**JAZZCNC** · 11-04-2020

Originally Posted by ngwagwa

I asume you mean the big red one on the front? If so then yes.

EDIT.
No that will be the E-Stop button won't it?

At the moment if I bend over and catch the E-stop with my backside I click on the Mach3 reset button to continue.

Ermm probably not usually Big Red button is E-stop, show me a pic.